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Evidence row 120304

Observed , by baseline/1.

Kind
listing
About
source_record x402_bazaar:https://saylorinnovations.com/api/kb/solana-rpc-websocket
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
80237515a379017891326fad964fe7362082ecc6363172b6303d61c504b97fa8
Leaf
0xcd0f87afe9e0f78e4e2b395f85b129613380bc7bfb0c9628be24e7a4b420b45c

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://saylorinnovations.com/api/kb/solana-rpc-websocket"
    ]
  ],
  "name": "Saylor Innovations Guide Library",
  "owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:solana-rpc-websocket",
          "name": "USD Coin",
          "note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:solana-rpc-websocket",
          "name": "USD Coin",
          "note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:137",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "assetTransferMethod": "eip3009",
          "facilitatorOnly": true,
          "memo": "saylor:solana-rpc-websocket",
          "name": "USD Coin",
          "note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:42161",
        "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "memo": "saylor:solana-rpc-websocket",
          "reference": "26BWUMs2zSjY6HsqXjW5HrjifXAwj2hwqtugqjLZYwyD",
          "session": "eyJhcnRpY2xlSWQiOiJzb2xhbmEtcnBjLXdlYnNvY2tldCIsInJlZmVyZW5jZSI6IjI2QldVTXMyelNqWTZIc3FYalc1SHJqaWZYQXdqMmh3cXR1Z3FqTFpZd3lEIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRVBqRldkZDVBdWZxU1NxZU0ycU4xeHp5YmFwQzhHNHdFR0drWnd5VER0MXYiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI0MzM2NzA5NzR9.geuBDEkV74wr5qGSoTtzVF86_n8GDhRrFeMzC2LxK70"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "memo": "saylor:solana-rpc-websocket",
          "reference": "HNzgYf4vASGbkFfV6nTBAeJH66Wn4K9yfKdXiALoGuiU",
          "session": "eyJhcnRpY2xlSWQiOiJzb2xhbmEtcnBjLXdlYnNvY2tldCIsInJlZmVyZW5jZSI6IkhOemdZZjR2QVNHYmtGZlY2blRCQWVKSDY2V240Szl5ZktkWGlBTG9HdWlVIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI0MzM2NzA5NzR9.nokPRzME2oZp80-dWAQuXkfEOPF4TJ-MnvCNGLa0BFk"
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      },
      {
        "amount": "92982",
        "asset": "So11111111111111111111111111111111111111112",
        "extra": {
          "memo": "saylor:solana-rpc-websocket",
          "native": true,
          "note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
          "quotedLamports": "95858",
          "reference": "CjwVrcYyVQJBPMSdzqrUR8oPq1m373ieiZo6T5FKkyYU",
          "session": "eyJhcnRpY2xlSWQiOiJzb2xhbmEtcnBjLXdlYnNvY2tldCIsInJlZmVyZW5jZSI6IkNqd1ZyY1l5VlFKQlBNU2R6cXJVUjhvUHExbTM3M2llaVpvNlQ1RktreVlVIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjpudWxsLCJtaW5BbW91bnQiOjkyOTgyLCJleHAiOjE3OTI0MzM2NzA5NzR9.E-5mgyHY3YUu98Cl5N9b1V2jeFhJCfqd8phLNE07niU",
          "solUsdPrice": 104.32
        },
        "maxTimeoutSeconds": 120,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
        "scheme": "exact"
      }
    ],
    "description": "Resilient Solana RPC and WebSocket monitoring - commitments, checkpoints, reconnects and backfill",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "body": "A procedure for building resilient Solana wallet/token/program monitoring: defining precise event and commitment semantics up front, persisting durable checkpoints (not memory-only cursors), reconnecting with bounded exponential backoff, backfilling missed history via signature/account RPC methods after every disconnect, deduplicating by a stable event key, correctly promoting or retracting provisional events as commitment increases, and failing over between providers without double-processing.",
              "c": "Solana",
              "id": "solana-rpc-websocket",
              "t": "Solana RPC and WebSocket Resilience Guide"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "body": {
                      "description": "Main body text",
                      "type": "string"
                    },
                    "c": {
                      "description": "Category of the guide",
                      "type": "string"
                    },
                    "id": {
                      "description": "Identifier of the record",
                      "type": "string"
                    },
                    "license": {
                      "description": "License identifier",
                      "type": "string"
                    },
                    "price": {
                      "description": "Price",
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "t": {
                      "description": "Title of the guide",
                      "type": "string"
                    }
                  },
                  "required": [
                    "id",
                    "t",
                    "c",
                    "body"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790235422/bazaar-icons/bc5e2b3d111ebbef.jpg",
    "lastUpdated": "2026-10-19T18:12:31.028Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-19T18:12:30.672Z"
    },
    "resource": "https://saylorinnovations.com/api/kb/solana-rpc-websocket",
    "serviceName": "Saylor Innovations Guide Library",
    "tags": [
      "solana-rpc",
      "websocket",
      "monitoring",
      "reliability",
      "reconnect-backoff"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Resilient Solana RPC and WebSocket monitoring - commitments, checkpoints, reconnects and backfill"
}

What the leaf hashes

{"body":"80237515a379017891326fad964fe7362082ecc6363172b6303d61c504b97fa8","id":120304,"kind":"listing","method":"baseline/1","observed_us":1793025617632758,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/kb/solana-rpc-websocket","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).

  1. 0xcd0ffec9c4c13b2523dfcd856e95aced879cbe5534007330cdddd13e108e9305
  2. 0x2d74696652c6d611f4e0b1d889503946490ede3104b6d7ce77d71eed62aa2d33
  3. 0xa3052ac9102017fcc9714299d7e4abc73c99ffb6cc29fe142acdad15dc40e7c0
  4. 0xf1859e624adedf8d55a6a5cf544f9aea44c57a7a51d942bc85e46650242be8f3
  5. 0x207d9df8959a87237a574e22744cbe0fe18025aa22af3865f4ded0b5becec986
  6. 0x68e9957eb6aa18b2387ef21e5d9738857f2b8e03b3060e9b3c52e38b0d6e460a
  7. 0x652fadfe4133ef26f2bbc60cb59ae0626c99bf11c28c4a263877e6473805796c
  8. 0x1d2d82ddff58993ab50a3b1ccf64a7fcf8f25c7fce2f6b77cf87aa38c8eb9367
  9. 0x9a8251a74ddd027a62738e2ca514d7dcd982202c4ad1f5f0a4f81e89ceff0fa6
  10. 0x28f5e3a424e6df882445451ebbb98ea4799c643ef3231cda98518a826f880a47
  11. 0x1233e806ac6f264fea872a85785df4b3024b89e9788bb6dfa89e28944cb30400
  12. 0x85ea84dc356483b05e7ec8ed6e303988684070a1512dc756c8e64a7e3604feaf
  13. 0x985acd37cc044d5aa6ad959194da8e91c81045df83517891ed92f1763a9ab825
  14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
  15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
  16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
  17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
  18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
  19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
Day root
0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained
0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published
On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON